/* This file is part of the Palabos library.
 *
 * The Palabos softare is developed since 2011 by FlowKit-Numeca Group Sarl
 * (Switzerland) and the University of Geneva (Switzerland), which jointly
 * own the IP rights for most of the code base. Since October 2019, the
 * Palabos project is maintained by the University of Geneva and accepts
 * source code contributions from the community.
 *
 * Contact:
 * Jonas Latt
 * Computer Science Department
 * University of Geneva
 * 7 Route de Drize
 * 1227 Carouge, Switzerland
 * jonas.latt@unige.ch
 *
 * The most recent release of Palabos can be downloaded at
 * <https://palabos.unige.ch/>
 *
 * The library Palabos is free software: you can redistribute it and/or
 * modify it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * The library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <cmath>

#include "palabos2D.h"
#include "palabos2D.hh"

using namespace plb;
using namespace std;
typedef double T;

int main(int argc, char *argv[])
{
    plbInit(&argc, &argv);

    global::directories().setOutputDir("./tmp/");

    const int N = 600;
    ImageWriter<T> imageWriter("leeloo");

    MultiScalarField2D<T> field1(N + 1, N + 1);
    setToConstant(field1, Box2D(0, N / 2, 0, N), (T)1.);
    setToConstant(field1, Box2D(N / 2 + 1, N, 0, N), (T)2.);

    MultiScalarField2D<T> field2(N + 1, N + 1);
    setToConstant(field2, Box2D(0, N, 0, N / 2), (T)1.);
    setToConstant(field2, Box2D(0, N, N / 2 + 1, N), (T)2.);

    MultiScalarField2D<T> field3(N + 1, N + 1);
    setToCoordinate(field3, field3.getBoundingBox(), 0);

    imageWriter.writeScaledGif("field1", field1);
    imageWriter.writeScaledGif("field2", field2);
    imageWriter.writeScaledGif("field3", field3);
    imageWriter.writeScaledGif("field1+field2", *add(field1, field2));
    imageWriter.writeScaledGif("300*field1+field3", *add(*multiply((T)300., field1), field3));

    const T pi = (T)4. * std::atan((T)1.);
    T(*Tsin)
    (T) = std::sin;  // Explicit reference to the overloaded "sin" is required for automatic
                     // template instantiation.
    imageWriter.writeScaledGif("sine", *evaluate(Tsin, *multiply((T)2. * pi / (T)N, field3)));
}
